16). Ricky is an online golf equipment merchant who just created a new Google Merchant Center account. When Ricky creates his first data feed, he must add unique product identifiers for his products. Which combination of ‘gtin’, ‘mpn’, and ‘brand’ is valid?

54). Catherine is preparing to release a new line of toys that’s currently available for pre-order only on the landing page. Why is Catherine’s data feed getting disapproved for incorrect availability?